https://micorroom.com/ Free browser tools that measure your noise floor in dBFS, estimate room echo (RT60) from a hand clap, and tell you whether the problem is your microphone or your room, before a call, interview or podcast. en Sat, 14 Nov 2026 11:31:55 GMT https://micorroom.com/audio-latency-test/https://micorroom.com/audio-latency-test/Sat, 14 Nov 2026 11:31:55 GMTTo test Bluetooth headphone latency at home, play a sharp click or clap and record it with a microphone. Then measure the gap on the waveform between the original sound and the copy coming out of the earcup. For a second opinion, the clap-and-record method needs only a second phone, and the gap between the two waveform peaks, minus a wired baseline, is the delay Bluetooth adds in milliseconds. As of November 2026, ITU-R BT.1359 is generally cited as putting detectability of late sound in video at roughly 125 ms, and live calls start to feel awkward well before ITU-T G.114's 400 ms one-way planning limit. https://micorroom.com/decibel-meter-online/https://micorroom.com/decibel-meter-online/Sat, 14 Nov 2026 11:31:55 GMTAn online decibel meter reads your microphone in dBFS (decibels relative to full scale), where 0 is the loudest signal your mic can record before it clips, so every normal reading is negative. That makes it reliable for comparing levels on one device with the same settings, such as checking your room's noise floor before a call or recording. It cannot give real-world loudness in dB SPL or dBA, the units used for hearing safety. https://micorroom.com/mic-quality-test/https://micorroom.com/mic-quality-test/Sat, 14 Nov 2026 11:31:55 GMTTo test mic quality properly, turn off all voice processing and record 10 seconds of silence, 20 to 30 seconds of reading aloud and one hand clap. Then read three numbers off the waveform: the noise floor in dBFS, the speech-to-noise gap in dB and the clap decay time (RT60) in seconds. As of November 2026, for a podcast aim for a noise floor at or below -60 dBFS (about the ceiling Audible's ACX has used for audiobooks), speech peaks at least 45 dB above that floor and a room decay of 0.3 seconds or less. Zoom calls are more forgiving: about -50 dBFS, 35 dB and 0.5 seconds are the pass lines.